1. American Sports Medicine Institute, Birmingham, Alabama, USA
2. MedStar Health, Baltimore, Maryland, USA
3. Orthopaedic Associates of Manhasset, Great Neck, New York, USA
4. TRIA Orthopaedic Center, Maple Grove, Minnesota, USA
5. Hughston Clinic Orthopaedics, Nashville, Tennessee, USA
6. South Florida Orthopaedics & Sports Medicine, Stuart, Florida, USA